Sources connected with the case tell TMZ ... evidence in the room suggests certain potent drugs were "prescribed and prepared" for MJ to self-medicate.

As we firstreported, Dr. Murray's team will notchallengetheL.A. County Coroner's finding that Jackson died of amassive Propofol overdose. But as we told you, Murray's team willpresentevidence in the doc's manslaughter case that Michael awakened, thengave himself the fatal doseof Propofol when Murray left the room.

We're told Murray's team hasn't decided if it will use the evidence found in the room to implicate other doctors in Jackson's death. But we do know Murray's legal team willpresentevidence during the trial that the fruits of Jackson's notorious doctor shopping over two decades wore his body down.